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SCIENTIFIC CALCULATOR


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Current Calculator
Enter two known values and press Solve to calculate unknowns.

Volts
(Volts)

Resistance
(Ohms)

Current
(Amps)

Power
(Watts)

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Weather Computer
Temperature Conversion
Fahrenheit ( °F )
Celsius (°C)
Celsius ( o C )
Fahrenheit (o F)

Windchill Calculation
Temp
(°F)
Wind
Speed
(mph)
Wind chill =
Temp
(°C)
Wind
Speed
(mph)
Wind chill =

Relative Humidity Calculation
Temp
(°F )
Dew
Point
(°F)
Relative Humidity =
Temp
(°C)
Dew
Point
(°C )
Relative Humidity =

Heat Index Calculation
Valid entries are, air temperatures greater than 80 °F ( 27 °C ), dew point temperatures greater than 65 °F ( 12 °C ), and relative humidities higher than 40 percent.
Temp
(°F )
Dew
Point
(°F)
 RH =
Temp
(°C)
Dew
Point
(°C )
 RH =
Temp
(°F )
Relative
Humidity
(%)
Heat Index =
Dew Point =
Temp
(°C)
Relative
Humidity
(%)
Heat Index =
Dew Point =
 
 

Convert
Temperature

Enter temperature in one blank to convert to the other scale.

Fahrenheit:
Celsius:
Kelvin:
 

Calculate
Wind Chill

Enter temperature and wind speed to compute wind chill.

Temperature:
FC
Wind Speed:
MPHKnots
Wind Chill:
 
 

Calculate
Heat Index

Enter temperature and relative humidity below to calculate heat index

Temperature:
FC
Relative Humidity:
Heat Index:
 

Wind Speed
Conversions

Enter a speed into any blank to convert to all other wind speeds.

MPH:
Km/h:
Knots:
Meters/Second:
 
 

Calculate
Relative Humidity

Enter temperature and dewpoint below to calculate relative humidity

Temperature:
FC
Dewpoint:
Relative Humidity:
 

Convert
Pressure

Enter a pressure in one blank to convert to the other pressures.

Millibars:
Inches:
Millimeters:
 
 

Convert
Precipitation

Enter a depth into any blank to convert to other units .

Inches (hundredths) :
Inches:
Millimeters:
Centimeters:
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Julian Day and Civil Date Calculator

is a
 whose Julian Day Number is 
Calendar: Auto (Julian/Gregorian) Julian Only
(Edit the following field for interval calculations.)
is followed days later by
is a
 whose Julian Day Number is 
Calendar: Auto (Julian/Gregorian) Julian Only
  1. You must have JavaScript enabled in your browser for this calculator to work. Requires Netscape 3.0 or Internet Explorer 3.0 or later for correct operation.
  2. All fields are editable. Change civil date to calculate Julian Day Number and day-of-week, or vice versa.
  3. After changing a text box, click outside of the calculator, or press tab, to update all other data. (Don't press return.)
  4. In Auto mode, civil calendar changes from Julian to Gregorian between October 4/15, 1582. For Julian civil dates after that date, as in England and colonies until 1753, select Julian Only.